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Influence of Post-Heat Treatments on Fatigue Response of Low-alloyed Carbon-Manganese Steel Material Manufactured by Direct Energy Deposition-Arc Technique KU Leuven

Tomas Smismans, Nataliia Chernovol, Bert Lauwers, Patrick Van Rymenant, Reza Hojjati Talemi
The main idea of this paper is improving fatigue response of a low-alloyed carbon-manganese steel material manufactured by Direct Energy Deposition-Arc technique using post-heat treatments. Four series of fatigue specimens are machined from a 3D printed wall. The machined samples are austenitized following a direct quenching and tempering processes at two different temperatures. All samples are subjected to rotating bending fatigue loading ...

On the applicability of the hot spot stress method to high strength duplex and carbon steel welded details KU Leuven

Burak Karabulut, Barbara Rossi
In this paper, the applicability of the hot spot stress method (HSSM) to the study of fatigue behaviour of welded details made of high-strength stainless or carbon steel is investigated. To that purpose, a broad database of fatigue test results was collated from the literature for transverse stiffeners, butt welds and cope holes which are frequently present in highway girder bridges. For each set of test results, the hot spot stress range was ...

NDT inspection on TRC and precast concrete sandwich panels: A review Vrije Universiteit Brussel

Nicolas Ospitia, Eleni Tsangouri, Ali Pourkazemi, Johan Stiens, Dimitrios Angelis
Textile Reinforced Cementitious (TRC) composites have gained recent
ttention due to several advantages compared to traditional steel-reinforced concrete, such as concrete usage reductions and design freedom. The
mplementation of this technology on a sandwich design offers light-weight
nd slender structural elements with superior mechanical performance. espite their advantages, they exhibit a complicated structural and ...

Excited-State Proton Transfer Dynamics in LSSmOrange Studied by Time-Resolved Impulsive Stimulated Raman Spectroscopy KU Leuven

Pardeep Kumar, Eduard Fron, Haruko Hosoi, Hikaru Kuramochi, Satoshi Takeuchi, Hideaki Mizuno, Tahei Tahara
LSSmOrange is a fluorescent protein that exhibits a large energy gap between absorption and emission, which makes it a useful tool for multicolor bioimaging. This characteristic of LSSmOrange originates from excited-state proton transfer (ESPT): The neutral chromophore is predominantly present in the ground state while the bright fluorescence is emitted from the anionic excited state after ESPT. Interestingly, it was reported that this ESPT ...

Carbon Nanotube Based Radio Frequency Transistors for K-Band Amplifiers KU Leuven

Jianshuo Zhou, Lijun Liu, Huiwen Shi, Maguang Zhu, Xiaohan Cheng, Li Ren, Li Ding, Lian-Mao Peng, Zhiyong Zhang
Owing to the combination of high carrier mobility and saturation velocity, low intrinsic capacitance, and excellent stability, the carbon nanotube (CNT) has been considered as a perfect semiconductor to construct radio frequency (RF) field-effect transistors (FETs) and circuits with an ultrahigh frequency band. However, the reported CNT RF FETs usually exhibited poor real performance indicated by the as-measured maximum oscillation frequency ...